OMZ (disambiguation)

OMZ refers to Objedinennye Mashinostroitelnye Zavody (English: Uralmash-Izhora Group), a Russian manufacturing conglomerate.

OMZ may also refer to:


 * Oxygen minimum zone, the zone in which oxygen saturation in ocean seawater is at its lowest
 * Ossa Morena Zone, a geological area of the Iberian Peninsula